This species is known from three low and mid-altitude localities in southeastern Madagascar: (1) the type locality Fort Carnot (Ikongo) (2) Manombo Special Reserve, and (3) the village Vondrozo, from 44-600 m asl (Wollenberg et al. 2012). Calls probably referable to this species were heard from along the road running from Vondrozo to the nearby Vevembe forest (Wollenberg et al. 2012) and the species may occur more widely.
Habitat and Ecology
In Vondrozo the species was found in a completely deforested area, suggesting it is an adaptable species. At Manombo Special Reserve it was found in shrubs and logs at low perch heights (<50 cm) in the forest and in dense fern vegetation at the forest edge (Wollenberg et al. 2012). There is little known about reproduction and larval stages of this species; as calling males are not concentrated near water bodies it is suggested that they have the same nidicolous reproduction as other species in the Gephyromantis genus (Wollenberg et al. 2012).
Five adults specimens of this species are known from Manombo and three from Vodronzo village (Wollenberg et al. 2012). The species is suspected to be decreasing due to ongoing declines in the quality and extent of its habitat.
Coastal forests are subject to ongoing deforestation for timber and charcoal production, regular burning to maintain cattle pasture, and mining activities. The species has been found in both protected areas and degraded areas and is able to survive in anthropogenically transformed landscapes (Wollenberg et al. 2012); these are therefore thought to represent only minor threats.
Species in this genus have tested positive for Batrachochytrium dendrobatidis (Bd), however currently there have been no negative effects observed within amphibian populations in Madagascar suggesting the Bd strain has a low virulence level (Bletz et al. 2015).
The species occurs in Manombo Special Reserve (Wollenberg et al. 2012), a small and highly degraded protected area.
Site and habitat protection is required.
Further research is required to clarify the species' natural history, distribution, population size and trends, and is essential to fully understand the distribution, origin, type and virulence of Bd lineages found in Madagascar (Bletz et al. 2015).
Red List Status
Least Concern (LC)
Listed as Least Concern because of its apparent resilience and adaptability to habitat disturbance.
Resurrected from the synonymy of Gephryomantis boulengeri by Wollenberg et al. 2012 (Frost 2013).
IUCN SSC Amphibian Specialist Group 2016. Gephyromantis verrucosus. The IUCN Red List of Threatened Species 2016: e.T49566762A49568650. http://dx.doi.org/10.2305/IUCN.UK.2016-1.RLTS.T49566762A49568650.en